field_validation_someofseveral_validator.inc in Field Validation 7.2

File

field_validation_extras/plugins/validator/field_validation_someofseveral_validator.inc

<?php

/**
 * @file
 * Field validation some of several validator.
 */
$plugin = array(
  'label' => t('Require some of several fields'),
  'description' => t('Forces the user to specify / select at least some of several fields.'),
  'handler' => array(
    'class' => 'field_validation_someofseveral_validator',
  ),
);

/**
 *
 */
class field_validation_someofseveral_validator extends field_validation_validator {

  /**
   * Validate field.
   */
  public function validate() {
    $flag = FALSE;
    $group_name = $this->rule->settings['data'];
    $required_fields = $this->rule->settings['required_fields'];
    if (!is_numeric($required_fields) || $required_fields < 0) {
      return TRUE;
    }
    $field_values = $this
      ->get_field_column_value($this->items, $this->rule->col);
    $field_values = count(array_flip($field_values));
    if ($field_values >= $required_fields) {
      $flag = TRUE;
    }
    if (!$flag) {
      ctools_include('export');
      $other_group_rules = ctools_export_load_object('field_validation_rule', 'conditions', array(
        'entity_type' => $this->rule->entity_type,
        'bundle' => $this->rule->bundle,
        'validator' => $this->rule->validator,
      ));
      foreach ($other_group_rules as $other_group_rule) {

        // Skip when do not have the same group name, rule is disabled, equal to current rule.
        if ($other_group_rule->settings['data'] != $group_name || !empty($other_group_rule->disabled) || $other_group_rule->name == $this->rule->name) {
          continue;
        }
        $other_items = isset($this->entity->{$other_group_rule->field_name}[$this->langcode]) ? $this->entity->{$other_group_rule->field_name}[$this->langcode] : array();
        $other_field_values = $this
          ->get_field_column_value($other_items, $other_group_rule->col);
        $field_values += count(array_flip($other_field_values));
        if ($field_values >= $required_fields) {
          $flag = TRUE;
          break;
        }
      }
    }
    if (!$flag) {
      $this
        ->set_error();
    }
    $break = TRUE;
    return $break;
  }

  /**
   * Provide settings option.
   */
  function settings_form(&$form, &$form_state) {
    $default_settings = $this
      ->get_default_settings($form, $form_state);

    // Print debug($default_settings);
    $form['settings']['data'] = array(
      '#title' => t('Group name'),
      '#description' => t("Specify the group name for those fields, it should be the same across those fields. Validation rules with the same group name work together."),
      '#type' => 'textfield',
      '#default_value' => isset($default_settings['data']) ? $default_settings['data'] : '',
    );
    $form['settings']['required_fields'] = array(
      '#title' => t('Required fields number'),
      '#description' => t("Specify the minimum number of fields that must have a value, it should be the same across fields of the same group. Validation rules with the same group name work together."),
      '#type' => 'textfield',
      '#default_value' => isset($default_settings['required_fields']) ? $default_settings['required_fields'] : '',
    );
    parent::settings_form($form, $form_state);
  }

  /**
   * Helper function to get field values.
   */
  function get_field_column_value($items, $column = 'value') {
    $field_values = array();
    foreach ($items as $delta => $item) {
      if (isset($item[$column]) && $item[$column] != '') {
        $field_values[] = $item[$column];
      }
    }
    return $field_values;
  }

}

Classes

Name	Description
field_validation_someofseveral_validator